Air and gas burner.



J. T. FAG-AN.

AIR AND GAS BURNER.

APPLICATION FILED JUNE e, 1606.

1,031,842 Patented July 9, 1912.

WTJYESSES- .Zwmwrop.

UNTTED STATES PATNT @T FTCE.

JOHN T. FAGAN, OF CLEVELAND, OHIO, ASSIGNOR TO NATIONAL ELECTRIC LAMP COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF NEW JERSEY.,

AIR AND GAS BURNER.

LOSLSdZ.

Specification of Letters Patent.

Patented Julyfi, 1912.

Application filed June 9, 1906. Serial No. 320,994.

To all whom it may concern.

Be it known that I, JoI-IN T.'FAGAN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Air and Gas Burners, of which the following is a full, clear, and exact description.

The object of the present invention is .to provide an improved air and gas burner.

The invention particularly relates to that class of burners used for applying heat locally to any object, such burners for example, as are used in glass manipulating. In burners of this character, it has been found that the best manner in which to secure the proper proportion of gas and air, has been to allow the gas to escape through a number of small openings to a surface over which a blast of air is directed. The size and number of the openings, through which the gas passes to the surface over which the air blast is directed, very largely determine the character of the flame. I have devised several forms of such burners, but the form which I herein illustrate, embodies advantages in construction, in operation and in the matter of repair not found in any other form.

Referring to the accompanying drawings, which illustrate an embodiment of my inventio-n, Figure 1 is a longitudinal vertical section of the burner showing the air nozzle directed thereover. Fig. 2 is a side elevation of the burner. Fig. 8 is a vertical section of the burner. Fig. t is an end elevation of the burner, and Fig. 5 is a plan thereof.

The body of the burner consists of a simple casting having a trough-like head A with a hollow stem A communicating with the interior of the trough. The trough is closed at each end and open at the top. The sides extend some little distance above the ends and are each provided with a longitudinal groove A extending along their length on a level with the points of juncture of the upper edges of the ends and sides. It will be noted that the upper edges A of the ends are concave.

For the purpose of providing a perforated plate or top for the trough, I use a piece of sheet gauze B clipped to the proper width to allow of its being inserted between and held in the grooves A in the Sides of the burner head. The width of the gauze is sutlicient to give it a concave upper surface, when fitted in the retaining grooves, this causing it to. be held firmly in position and directing the incoming gas somewhat toward the center of curvature. The side walls of the burner head rise some little distance above the grooves A and thus inclose the space above the gauze plate somewhat so as to prevent side drafts from interfering with the flame.

A small nozzle C connected with an air supply is placed at one end of the burner head so as to direct a jet of air across the surface of the perforated top plate and cause the flame to shoot outward so as to produce a pointed blue tip.

It is to be noted that such a structure comprises the smallest number of parts which it is possible to produce as a matter of manufacture, since the only elements necessary are a strip of sheet gauze and a casting of a form which can be made readily and cheaply. There is no coring necessary in the making of these castings and the gauze strips may be clipped by machinery at the rate of several hundred pieces per minute. No adjunctive fastenings are necessary, and it will be seen that there is no bracing or joining of parts necessary and no drilling of fine holes requiring the services of a skilled machinist. The assembling of the two elementary parts can be done by a boy or a' woman without any experience whatever as it consists merely in passing the strip of gauze into the retaining grooves of the burner head.

In the matter of operation, the burner is absolutely perfect and under control, since the gauze strip may be of any mesh necessary and the selection made according to the flame which is desired.

In the matter of repair and longevity, the burner is obviously capable of indefinitely continued use. Whenever the fine perforations become clogged, as they do in burners of this sort, or whenever the flame surface has become softened by the heat so as to fuse and sag, all that is necessary to make the burner as good as new, is to slip out the gauze strip and replace it by a fresh piece. For this purpose, I make the str1p B a little longer than the burner head so that a portion of the strip B will project a suflicient distance from the rear of the head to enable it to be grasped with a pair of pliers.

From the above consideration, it will be seen that the burner I have produced is one of great simplicity in construction, accuracy in operation and great length of life.

Having thus described my invent-ion, I claim:

1. A burner comprising a hollow body having vertically extended Walls with retaining grooves therein extending along the length of said body, and a perforated strip frictionally held between said retaining grooves in concave form.

2. A burner comprising a trough-like body having closed ends, grooves in the side walls open at one end, and a perforated strip constrained into concave form and held within the said grooves in the side walls.

3. A burner comprising a trough-like body having closed ends, the side walls of the body being provided with grooves, and

into concave form and seated upon said end walls.

5. A burner comprising a body having a head provided with a concave perforated plate covering the outlet thereof, said body having integral side walls projecting above said plate and extending parallel with each other throughout the length of said head and being free from obstruction between their ends so as to permit the flame to be properly directed along a plane parallel to the perforated plate.

6. A burner comprising a body having a head provided with a perforated plate covering the outlet thereof, side walls projecting above said plate and extending parallel with each other and being free from obstruction between their ends so as to permit the flame to be properly directed along a plane parallel to the perforated plate, and grooves in the side walls in which the perforated plate is frictionally held, the burner being free from obstruct-ion on the plane of the grooves at One end so as to permit the plate to be withdrawn endwise.

In testimony whereof, I hereunto afiix my signature in the presence of two witnesses.

JOHN T. FAGAN. lVitnesses F. P. HARRIS, R. G. MoKAY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

